Synthesis and Thermoelectric Properties of TiO2/Cu2SnSe3 Composites
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2017-10-12 |
| Journal | Applied Sciences |
| Authors | Jiai Ning, Di Wu, Degang Zhao |
| Institutions | University of Jinan |
| Citations | 20 |
Abstract
Section titled “Abstract”Thermoelectric (TE) materials are a kind of energy material which can directly convert waste heat into electricity based on TE effects. Ternary Cu2SnSe3 material with diamond-like structure has become one of the potential TE materials due to its low thermal conductivity and adjustable electrical conductivity. In this study, the Cu2SnSe3 powder was prepared by vacuum melting-quenching-annealing-grinding process. The nano-TiO2 particles were introduced into the Cu2SnSe3 matrix by ball milling. Spark plasma sintering (SPS) was employed to fabricate the TiO2/Cu2SnSe3 composites. The X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM) were used to study the phase and microstructure of TiO2/Cu2SnSe3 composites. Electrical resistivity, Seebeck coefficient, and thermal conductivity measurement were applied to analyze the thermoelectric properties. For the 1.4%TiO2/Cu2SnSe3 composite, the electrical conductivity was improved whereas the Seebeck coefficient was lower than that of pure Cu2SnSe3. For other TiO2/Cu2SnSe3 samples, the Seebeck coefficient was improved while the electrical conductivity was reduced. The thermal conductivity of TiO2/Cu2SnSe3 composites was lower than that of Cu2SnSe3 matrix, which is attributed to the lower carrier conductivity. A maximum ZT of 0.30 at 700 K for the 1.0%TiO2/Cu2SnSe3 composite was obtained, which was 17% higher than that of the pure Cu2SnSe3 at 700 K.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2016 - Recent advances in high-performance bulk thermoelectric materials
- 2016 - A review on nanostructures of high temperature thermoelectric materials for waste heat recovery [Crossref]
- 2015 - Structural and electrical properties of Si- and Ti-doped Cu2SnSe3 bulks [Crossref]
- 2016 - High thermoelectric performance of In-doped Cu2SnSe3 prepared by fast combustion synthesis [Crossref]
- 2016 - Combustion synthesis of Cu2SnSe3 thermoelectric materials [Crossref]
- 2014 - Complete colloidal synthesis of Cu2SnSe3 nanocrystals with crystal phase and shape control [Crossref]
- 2014 - Selective Synthesis of Cu2SnSe3 and Cu2SnSe4 nanocrystals [Crossref]
- 2013 - Synthesis of Cu2SnSe3 nanocrystals for solution processable photovoltaic cells [Crossref]
- 2011 - Thermoelectric properties and investigations of low thermal conductivity in Ga-doped Cu2GeSe3 [Crossref]
- 2013 - Investigation of thermoelectric properties of Cu2GaxSn1−xSe3 diamond-like compounds by hot pressing and spark plasma sintering [Crossref]